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Petroleum、Natural gas Antisepsis Tubes

Different antisepsis structure:

● Epoxy coal tar

● FRP resin
Main Properties:

Density(kg/m3) Elastic Modulus(MPa) Tensile Strength(MPa) Bending Strength(MPa) Expansion Coefficient(1/℃) Water Vapor Transmission Rate
1800~2000 >4000 ≥150 ≥50 1 ×10-5

Immersion 0.05
Mpa 1h without water infiltration

 
● Polyurethane asphalt antisepsis
Item Varnish Primer Item Varnish Primer
Exterior Black,small allowed Brown,small allowed hardness >0.6 >0.7
Drying time(25℃),h ≤1 ≤1 Saltwater resistance 3% 48h no change 48h no change
Elasticity,mm 1 1

Distilled water resistance

No change No change

Impact Strength

(N.cm/cm2)
500 500
Adhesion,rank 1~2 1
● Two or three layer PE
Sr.NO Item Performance index Testing method
Two-layer Three-layer
1 Peeling strength(N/cm)20±5 ≥35 ≥60
50±5 ≥25 ≥40
2 Cathodic delamination(mm)(65℃,48h) ≤15 ≤10
3 Impact strength(J/mm) ≥5
4 Anti-bending(2.5°) Polyethylene without cracking
5 Breakdown voltage(kv) 25~30


 
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